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Finding the Fourth Proportional to 750.06, 1,123.98 and 385.08

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Solution

The fourth proportional to 750.06, 1,123.98 and 385.08 is: 577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.06 : 1,123.98 = 385.08 : x
  2. Step 2: Convert to fraction form
    750.06/1,123.98 = 385.08/x
  3. Step 3: Cross multiply
    750.06x = 1,123.98 × 385.08
  4. Step 4: Simplify right side
    750.06x = 432,822.22
  5. Step 5: Solve for x
    x = 432,822.22/750.06
  6. Step 6: Final answer
    x = 577.05

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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.