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Finding the Fourth Proportional to 572.61, 790.86 and 484.38

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Solution

The fourth proportional to 572.61, 790.86 and 484.38 is: 669.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.61 : 790.86 = 484.38 : x
  2. Step 2: Convert to fraction form
    572.61/790.86 = 484.38/x
  3. Step 3: Cross multiply
    572.61x = 790.86 × 484.38
  4. Step 4: Simplify right side
    572.61x = 383,076.77
  5. Step 5: Solve for x
    x = 383,076.77/572.61
  6. Step 6: Final answer
    x = 669.00

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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.