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Finding the Fourth Proportional to 473.99, 711.45 and 291.74

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Solution

The fourth proportional to 473.99, 711.45 and 291.74 is: 437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.99 : 711.45 = 291.74 : x
  2. Step 2: Convert to fraction form
    473.99/711.45 = 291.74/x
  3. Step 3: Cross multiply
    473.99x = 711.45 × 291.74
  4. Step 4: Simplify right side
    473.99x = 207,556.96
  5. Step 5: Solve for x
    x = 207,556.96/473.99
  6. Step 6: Final answer
    x = 437.89

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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.