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Finding the Fourth Proportional to 938.69, 1,294.61 and 703.19

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Solution

The fourth proportional to 938.69, 1,294.61 and 703.19 is: 969.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.69 : 1,294.61 = 703.19 : x
  2. Step 2: Convert to fraction form
    938.69/1,294.61 = 703.19/x
  3. Step 3: Cross multiply
    938.69x = 1,294.61 × 703.19
  4. Step 4: Simplify right side
    938.69x = 910,358.50
  5. Step 5: Solve for x
    x = 910,358.50/938.69
  6. Step 6: Final answer
    x = 969.82

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.