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Finding the Fourth Proportional to 585.24, 877.86 and 489.72

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Solution

The fourth proportional to 585.24, 877.86 and 489.72 is: 734.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.24 : 877.86 = 489.72 : x
  2. Step 2: Convert to fraction form
    585.24/877.86 = 489.72/x
  3. Step 3: Cross multiply
    585.24x = 877.86 × 489.72
  4. Step 4: Simplify right side
    585.24x = 429,905.60
  5. Step 5: Solve for x
    x = 429,905.60/585.24
  6. Step 6: Final answer
    x = 734.58

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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.