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Finding the Fourth Proportional to 969.48, 1,337.17 and 615.10

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Solution

The fourth proportional to 969.48, 1,337.17 and 615.10 is: 848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.48 : 1,337.17 = 615.10 : x
  2. Step 2: Convert to fraction form
    969.48/1,337.17 = 615.10/x
  3. Step 3: Cross multiply
    969.48x = 1,337.17 × 615.10
  4. Step 4: Simplify right side
    969.48x = 822,490.83
  5. Step 5: Solve for x
    x = 822,490.83/969.48
  6. Step 6: Final answer
    x = 848.38

Related Problems

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Half scale
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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.