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Finding the Fourth Proportional to 436.65, 602.40 and 259.59

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Solution

The fourth proportional to 436.65, 602.40 and 259.59 is: 358.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.65 : 602.40 = 259.59 : x
  2. Step 2: Convert to fraction form
    436.65/602.40 = 259.59/x
  3. Step 3: Cross multiply
    436.65x = 602.40 × 259.59
  4. Step 4: Simplify right side
    436.65x = 156,377.02
  5. Step 5: Solve for x
    x = 156,377.02/436.65
  6. Step 6: Final answer
    x = 358.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.