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Finding the Fourth Proportional to 749.02, 1,034.15 and 469.67

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Solution

The fourth proportional to 749.02, 1,034.15 and 469.67 is: 648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.02 : 1,034.15 = 469.67 : x
  2. Step 2: Convert to fraction form
    749.02/1,034.15 = 469.67/x
  3. Step 3: Cross multiply
    749.02x = 1,034.15 × 469.67
  4. Step 4: Simplify right side
    749.02x = 485,709.23
  5. Step 5: Solve for x
    x = 485,709.23/749.02
  6. Step 6: Final answer
    x = 648.46

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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.