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Finding the Fourth Proportional to 587.15, 882.32 and 553.58

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Solution

The fourth proportional to 587.15, 882.32 and 553.58 is: 831.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.15 : 882.32 = 553.58 : x
  2. Step 2: Convert to fraction form
    587.15/882.32 = 553.58/x
  3. Step 3: Cross multiply
    587.15x = 882.32 × 553.58
  4. Step 4: Simplify right side
    587.15x = 488,434.14
  5. Step 5: Solve for x
    x = 488,434.14/587.15
  6. Step 6: Final answer
    x = 831.88

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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.