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Finding the Fourth Proportional to 359.60, 538.08 and 313.28

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Solution

The fourth proportional to 359.60, 538.08 and 313.28 is: 468.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.60 : 538.08 = 313.28 : x
  2. Step 2: Convert to fraction form
    359.60/538.08 = 313.28/x
  3. Step 3: Cross multiply
    359.60x = 538.08 × 313.28
  4. Step 4: Simplify right side
    359.60x = 168,569.70
  5. Step 5: Solve for x
    x = 168,569.70/359.60
  6. Step 6: Final answer
    x = 468.77

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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.