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Finding the Fourth Proportional to 890.60, 1,343.49 and 888.77

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Solution

The fourth proportional to 890.60, 1,343.49 and 888.77 is: 1,340.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.60 : 1,343.49 = 888.77 : x
  2. Step 2: Convert to fraction form
    890.60/1,343.49 = 888.77/x
  3. Step 3: Cross multiply
    890.60x = 1,343.49 × 888.77
  4. Step 4: Simplify right side
    890.60x = 1,194,053.63
  5. Step 5: Solve for x
    x = 1,194,053.63/890.60
  6. Step 6: Final answer
    x = 1,340.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.