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Finding the Fourth Proportional to 581.34, 873.64 and 477.66

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Solution

The fourth proportional to 581.34, 873.64 and 477.66 is: 717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.34 : 873.64 = 477.66 : x
  2. Step 2: Convert to fraction form
    581.34/873.64 = 477.66/x
  3. Step 3: Cross multiply
    581.34x = 873.64 × 477.66
  4. Step 4: Simplify right side
    581.34x = 417,302.88
  5. Step 5: Solve for x
    x = 417,302.88/581.34
  6. Step 6: Final answer
    x = 717.83

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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.