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Finding the Fourth Proportional to 359.02, 538.94 and 278.29

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Solution

The fourth proportional to 359.02, 538.94 and 278.29 is: 417.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.02 : 538.94 = 278.29 : x
  2. Step 2: Convert to fraction form
    359.02/538.94 = 278.29/x
  3. Step 3: Cross multiply
    359.02x = 538.94 × 278.29
  4. Step 4: Simplify right side
    359.02x = 149,981.61
  5. Step 5: Solve for x
    x = 149,981.61/359.02
  6. Step 6: Final answer
    x = 417.75

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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.