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Finding the Fourth Proportional to 520.72, 719.52 and 373.84

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Solution

The fourth proportional to 520.72, 719.52 and 373.84 is: 516.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.72 : 719.52 = 373.84 : x
  2. Step 2: Convert to fraction form
    520.72/719.52 = 373.84/x
  3. Step 3: Cross multiply
    520.72x = 719.52 × 373.84
  4. Step 4: Simplify right side
    520.72x = 268,985.36
  5. Step 5: Solve for x
    x = 268,985.36/520.72
  6. Step 6: Final answer
    x = 516.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.