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Finding the Fourth Proportional to 587.74, 879.85 and 355.93

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Solution

The fourth proportional to 587.74, 879.85 and 355.93 is: 532.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.74 : 879.85 = 355.93 : x
  2. Step 2: Convert to fraction form
    587.74/879.85 = 355.93/x
  3. Step 3: Cross multiply
    587.74x = 879.85 × 355.93
  4. Step 4: Simplify right side
    587.74x = 313,165.01
  5. Step 5: Solve for x
    x = 313,165.01/587.74
  6. Step 6: Final answer
    x = 532.83

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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.