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Finding the Fourth Proportional to 587.28, 885.60 and 576.36

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Solution

The fourth proportional to 587.28, 885.60 and 576.36 is: 869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.28 : 885.60 = 576.36 : x
  2. Step 2: Convert to fraction form
    587.28/885.60 = 576.36/x
  3. Step 3: Cross multiply
    587.28x = 885.60 × 576.36
  4. Step 4: Simplify right side
    587.28x = 510,424.42
  5. Step 5: Solve for x
    x = 510,424.42/587.28
  6. Step 6: Final answer
    x = 869.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.