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Finding the Fourth Proportional to 630.32, 868.04 and 551.32

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Solution

The fourth proportional to 630.32, 868.04 and 551.32 is: 759.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.32 : 868.04 = 551.32 : x
  2. Step 2: Convert to fraction form
    630.32/868.04 = 551.32/x
  3. Step 3: Cross multiply
    630.32x = 868.04 × 551.32
  4. Step 4: Simplify right side
    630.32x = 478,567.81
  5. Step 5: Solve for x
    x = 478,567.81/630.32
  6. Step 6: Final answer
    x = 759.25

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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.