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Finding the Fourth Proportional to 937.91, 1,294.38 and 690.36

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Solution

The fourth proportional to 937.91, 1,294.38 and 690.36 is: 952.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.91 : 1,294.38 = 690.36 : x
  2. Step 2: Convert to fraction form
    937.91/1,294.38 = 690.36/x
  3. Step 3: Cross multiply
    937.91x = 1,294.38 × 690.36
  4. Step 4: Simplify right side
    937.91x = 893,588.18
  5. Step 5: Solve for x
    x = 893,588.18/937.91
  6. Step 6: Final answer
    x = 952.74

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Double scale
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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.