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Finding the Fourth Proportional to 977.05, 1,348.41 and 741.34

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Solution

The fourth proportional to 977.05, 1,348.41 and 741.34 is: 1,023.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.05 : 1,348.41 = 741.34 : x
  2. Step 2: Convert to fraction form
    977.05/1,348.41 = 741.34/x
  3. Step 3: Cross multiply
    977.05x = 1,348.41 × 741.34
  4. Step 4: Simplify right side
    977.05x = 999,630.27
  5. Step 5: Solve for x
    x = 999,630.27/977.05
  6. Step 6: Final answer
    x = 1,023.11

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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.