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Finding the Fourth Proportional to 572.39, 790.19 and 454.25

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Solution

The fourth proportional to 572.39, 790.19 and 454.25 is: 627.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.39 : 790.19 = 454.25 : x
  2. Step 2: Convert to fraction form
    572.39/790.19 = 454.25/x
  3. Step 3: Cross multiply
    572.39x = 790.19 × 454.25
  4. Step 4: Simplify right side
    572.39x = 358,937.59
  5. Step 5: Solve for x
    x = 358,937.59/572.39
  6. Step 6: Final answer
    x = 627.09

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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.