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Finding the Fourth Proportional to 572.61, 854.55 and 558.03

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Solution

The fourth proportional to 572.61, 854.55 and 558.03 is: 832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.61 : 854.55 = 558.03 : x
  2. Step 2: Convert to fraction form
    572.61/854.55 = 558.03/x
  3. Step 3: Cross multiply
    572.61x = 854.55 × 558.03
  4. Step 4: Simplify right side
    572.61x = 476,864.54
  5. Step 5: Solve for x
    x = 476,864.54/572.61
  6. Step 6: Final answer
    x = 832.79

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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.