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Finding the Fourth Proportional to 756.96, 1,045.01 and 458.26

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Solution

The fourth proportional to 756.96, 1,045.01 and 458.26 is: 632.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.96 : 1,045.01 = 458.26 : x
  2. Step 2: Convert to fraction form
    756.96/1,045.01 = 458.26/x
  3. Step 3: Cross multiply
    756.96x = 1,045.01 × 458.26
  4. Step 4: Simplify right side
    756.96x = 478,884.82
  5. Step 5: Solve for x
    x = 478,884.82/756.96
  6. Step 6: Final answer
    x = 632.65

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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.