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Finding the Fourth Proportional to 572.13, 784.76 and 551.61

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Solution

The fourth proportional to 572.13, 784.76 and 551.61 is: 756.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.13 : 784.76 = 551.61 : x
  2. Step 2: Convert to fraction form
    572.13/784.76 = 551.61/x
  3. Step 3: Cross multiply
    572.13x = 784.76 × 551.61
  4. Step 4: Simplify right side
    572.13x = 432,878.71
  5. Step 5: Solve for x
    x = 432,878.71/572.13
  6. Step 6: Final answer
    x = 756.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.