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Finding the Fourth Proportional to 651.52, 968.91 and 631.02

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Solution

The fourth proportional to 651.52, 968.91 and 631.02 is: 938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.52 : 968.91 = 631.02 : x
  2. Step 2: Convert to fraction form
    651.52/968.91 = 631.02/x
  3. Step 3: Cross multiply
    651.52x = 968.91 × 631.02
  4. Step 4: Simplify right side
    651.52x = 611,401.59
  5. Step 5: Solve for x
    x = 611,401.59/651.52
  6. Step 6: Final answer
    x = 938.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.