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Finding the Fourth Proportional to 315.59, 473.67 and 153.38

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Solution

The fourth proportional to 315.59, 473.67 and 153.38 is: 230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.59 : 473.67 = 153.38 : x
  2. Step 2: Convert to fraction form
    315.59/473.67 = 153.38/x
  3. Step 3: Cross multiply
    315.59x = 473.67 × 153.38
  4. Step 4: Simplify right side
    315.59x = 72,649.14
  5. Step 5: Solve for x
    x = 72,649.14/315.59
  6. Step 6: Final answer
    x = 230.20

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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.