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Finding the Fourth Proportional to 653.28, 902.16 and 614.40

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Solution

The fourth proportional to 653.28, 902.16 and 614.40 is: 848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.28 : 902.16 = 614.40 : x
  2. Step 2: Convert to fraction form
    653.28/902.16 = 614.40/x
  3. Step 3: Cross multiply
    653.28x = 902.16 × 614.40
  4. Step 4: Simplify right side
    653.28x = 554,287.10
  5. Step 5: Solve for x
    x = 554,287.10/653.28
  6. Step 6: Final answer
    x = 848.47

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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.