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Finding the Fourth Proportional to 374.19, 560.13 and 318.84

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Solution

The fourth proportional to 374.19, 560.13 and 318.84 is: 477.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.19 : 560.13 = 318.84 : x
  2. Step 2: Convert to fraction form
    374.19/560.13 = 318.84/x
  3. Step 3: Cross multiply
    374.19x = 560.13 × 318.84
  4. Step 4: Simplify right side
    374.19x = 178,590.35
  5. Step 5: Solve for x
    x = 178,590.35/374.19
  6. Step 6: Final answer
    x = 477.27

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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.