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Finding the Fourth Proportional to 977.01, 1,463.40 and 606.91

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Solution

The fourth proportional to 977.01, 1,463.40 and 606.91 is: 909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.01 : 1,463.40 = 606.91 : x
  2. Step 2: Convert to fraction form
    977.01/1,463.40 = 606.91/x
  3. Step 3: Cross multiply
    977.01x = 1,463.40 × 606.91
  4. Step 4: Simplify right side
    977.01x = 888,148.44
  5. Step 5: Solve for x
    x = 888,148.44/977.01
  6. Step 6: Final answer
    x = 909.05

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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.