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Finding the Fourth Proportional to 572.90, 790.10 and 425.88

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Solution

The fourth proportional to 572.90, 790.10 and 425.88 is: 587.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.90 : 790.10 = 425.88 : x
  2. Step 2: Convert to fraction form
    572.90/790.10 = 425.88/x
  3. Step 3: Cross multiply
    572.90x = 790.10 × 425.88
  4. Step 4: Simplify right side
    572.90x = 336,485.66
  5. Step 5: Solve for x
    x = 336,485.66/572.90
  6. Step 6: Final answer
    x = 587.34

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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.