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Finding the Fourth Proportional to 373.31, 560.25 and 258.56

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Solution

The fourth proportional to 373.31, 560.25 and 258.56 is: 388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.31 : 560.25 = 258.56 : x
  2. Step 2: Convert to fraction form
    373.31/560.25 = 258.56/x
  3. Step 3: Cross multiply
    373.31x = 560.25 × 258.56
  4. Step 4: Simplify right side
    373.31x = 144,855.44
  5. Step 5: Solve for x
    x = 144,855.44/373.31
  6. Step 6: Final answer
    x = 388.04

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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.