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Finding the Fourth Proportional to 587.95, 812.01 and 392.29

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Solution

The fourth proportional to 587.95, 812.01 and 392.29 is: 541.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.95 : 812.01 = 392.29 : x
  2. Step 2: Convert to fraction form
    587.95/812.01 = 392.29/x
  3. Step 3: Cross multiply
    587.95x = 812.01 × 392.29
  4. Step 4: Simplify right side
    587.95x = 318,543.40
  5. Step 5: Solve for x
    x = 318,543.40/587.95
  6. Step 6: Final answer
    x = 541.79

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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.