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Finding the Fourth Proportional to 587.64, 812.56 and 495.52

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Solution

The fourth proportional to 587.64, 812.56 and 495.52 is: 685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.64 : 812.56 = 495.52 : x
  2. Step 2: Convert to fraction form
    587.64/812.56 = 495.52/x
  3. Step 3: Cross multiply
    587.64x = 812.56 × 495.52
  4. Step 4: Simplify right side
    587.64x = 402,639.73
  5. Step 5: Solve for x
    x = 402,639.73/587.64
  6. Step 6: Final answer
    x = 685.18

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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.