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Finding the Fourth Proportional to 359.76, 536.70 and 325.20

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Solution

The fourth proportional to 359.76, 536.70 and 325.20 is: 485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.76 : 536.70 = 325.20 : x
  2. Step 2: Convert to fraction form
    359.76/536.70 = 325.20/x
  3. Step 3: Cross multiply
    359.76x = 536.70 × 325.20
  4. Step 4: Simplify right side
    359.76x = 174,534.84
  5. Step 5: Solve for x
    x = 174,534.84/359.76
  6. Step 6: Final answer
    x = 485.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.