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Finding the Fourth Proportional to 707.66, 1,060.80 and 342.24

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Solution

The fourth proportional to 707.66, 1,060.80 and 342.24 is: 513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.66 : 1,060.80 = 342.24 : x
  2. Step 2: Convert to fraction form
    707.66/1,060.80 = 342.24/x
  3. Step 3: Cross multiply
    707.66x = 1,060.80 × 342.24
  4. Step 4: Simplify right side
    707.66x = 363,048.19
  5. Step 5: Solve for x
    x = 363,048.19/707.66
  6. Step 6: Final answer
    x = 513.03

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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.