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Finding the Fourth Proportional to 476.89, 715.60 and 271.59

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Solution

The fourth proportional to 476.89, 715.60 and 271.59 is: 407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.89 : 715.60 = 271.59 : x
  2. Step 2: Convert to fraction form
    476.89/715.60 = 271.59/x
  3. Step 3: Cross multiply
    476.89x = 715.60 × 271.59
  4. Step 4: Simplify right side
    476.89x = 194,347.46
  5. Step 5: Solve for x
    x = 194,347.46/476.89
  6. Step 6: Final answer
    x = 407.53

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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.