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Finding the Fourth Proportional to 375.79, 560.38 and 345.87

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Solution

The fourth proportional to 375.79, 560.38 and 345.87 is: 515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.79 : 560.38 = 345.87 : x
  2. Step 2: Convert to fraction form
    375.79/560.38 = 345.87/x
  3. Step 3: Cross multiply
    375.79x = 560.38 × 345.87
  4. Step 4: Simplify right side
    375.79x = 193,820.96
  5. Step 5: Solve for x
    x = 193,820.96/375.79
  6. Step 6: Final answer
    x = 515.77

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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.