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Finding the Fourth Proportional to 756.56, 1,045.11 and 535.13

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Solution

The fourth proportional to 756.56, 1,045.11 and 535.13 is: 739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.56 : 1,045.11 = 535.13 : x
  2. Step 2: Convert to fraction form
    756.56/1,045.11 = 535.13/x
  3. Step 3: Cross multiply
    756.56x = 1,045.11 × 535.13
  4. Step 4: Simplify right side
    756.56x = 559,264.49
  5. Step 5: Solve for x
    x = 559,264.49/756.56
  6. Step 6: Final answer
    x = 739.23

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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.