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Finding the Fourth Proportional to 920.01, 1,270.13 and 606.18

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Solution

The fourth proportional to 920.01, 1,270.13 and 606.18 is: 836.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.01 : 1,270.13 = 606.18 : x
  2. Step 2: Convert to fraction form
    920.01/1,270.13 = 606.18/x
  3. Step 3: Cross multiply
    920.01x = 1,270.13 × 606.18
  4. Step 4: Simplify right side
    920.01x = 769,927.40
  5. Step 5: Solve for x
    x = 769,927.40/920.01
  6. Step 6: Final answer
    x = 836.87

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1.5x scale

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.