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Finding the Fourth Proportional to 425.08, 586.27 and 285.15

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Solution

The fourth proportional to 425.08, 586.27 and 285.15 is: 393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.08 : 586.27 = 285.15 : x
  2. Step 2: Convert to fraction form
    425.08/586.27 = 285.15/x
  3. Step 3: Cross multiply
    425.08x = 586.27 × 285.15
  4. Step 4: Simplify right side
    425.08x = 167,174.89
  5. Step 5: Solve for x
    x = 167,174.89/425.08
  6. Step 6: Final answer
    x = 393.28

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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.