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Finding the Fourth Proportional to 749.99, 1,124.93 and 475.48

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Solution

The fourth proportional to 749.99, 1,124.93 and 475.48 is: 713.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.99 : 1,124.93 = 475.48 : x
  2. Step 2: Convert to fraction form
    749.99/1,124.93 = 475.48/x
  3. Step 3: Cross multiply
    749.99x = 1,124.93 × 475.48
  4. Step 4: Simplify right side
    749.99x = 534,873.71
  5. Step 5: Solve for x
    x = 534,873.71/749.99
  6. Step 6: Final answer
    x = 713.17

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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.