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Finding the Fourth Proportional to 711.91, 1,066.55 and 597.09

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Solution

The fourth proportional to 711.91, 1,066.55 and 597.09 is: 894.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.91 : 1,066.55 = 597.09 : x
  2. Step 2: Convert to fraction form
    711.91/1,066.55 = 597.09/x
  3. Step 3: Cross multiply
    711.91x = 1,066.55 × 597.09
  4. Step 4: Simplify right side
    711.91x = 636,829.59
  5. Step 5: Solve for x
    x = 636,829.59/711.91
  6. Step 6: Final answer
    x = 894.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.