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Finding the Fourth Proportional to 901.76, 1,351.02 and 469.40

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Solution

The fourth proportional to 901.76, 1,351.02 and 469.40 is: 703.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.76 : 1,351.02 = 469.40 : x
  2. Step 2: Convert to fraction form
    901.76/1,351.02 = 469.40/x
  3. Step 3: Cross multiply
    901.76x = 1,351.02 × 469.40
  4. Step 4: Simplify right side
    901.76x = 634,168.79
  5. Step 5: Solve for x
    x = 634,168.79/901.76
  6. Step 6: Final answer
    x = 703.26

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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.