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Finding the Fourth Proportional to 896.47, 1,348.80 and 531.51

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Solution

The fourth proportional to 896.47, 1,348.80 and 531.51 is: 799.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.47 : 1,348.80 = 531.51 : x
  2. Step 2: Convert to fraction form
    896.47/1,348.80 = 531.51/x
  3. Step 3: Cross multiply
    896.47x = 1,348.80 × 531.51
  4. Step 4: Simplify right side
    896.47x = 716,904.21
  5. Step 5: Solve for x
    x = 716,904.21/896.47
  6. Step 6: Final answer
    x = 799.70

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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.