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Finding the Fourth Proportional to 637.65, 956.79 and 290.93

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Solution

The fourth proportional to 637.65, 956.79 and 290.93 is: 436.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.65 : 956.79 = 290.93 : x
  2. Step 2: Convert to fraction form
    637.65/956.79 = 290.93/x
  3. Step 3: Cross multiply
    637.65x = 956.79 × 290.93
  4. Step 4: Simplify right side
    637.65x = 278,354.13
  5. Step 5: Solve for x
    x = 278,354.13/637.65
  6. Step 6: Final answer
    x = 436.53

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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.