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Finding the Fourth Proportional to 580.34, 869.66 and 291.38

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Solution

The fourth proportional to 580.34, 869.66 and 291.38 is: 436.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.34 : 869.66 = 291.38 : x
  2. Step 2: Convert to fraction form
    580.34/869.66 = 291.38/x
  3. Step 3: Cross multiply
    580.34x = 869.66 × 291.38
  4. Step 4: Simplify right side
    580.34x = 253,401.53
  5. Step 5: Solve for x
    x = 253,401.53/580.34
  6. Step 6: Final answer
    x = 436.64

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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.