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Finding the Fourth Proportional to 900.46, 1,242.11 and 606.13

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Solution

The fourth proportional to 900.46, 1,242.11 and 606.13 is: 836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.46 : 1,242.11 = 606.13 : x
  2. Step 2: Convert to fraction form
    900.46/1,242.11 = 606.13/x
  3. Step 3: Cross multiply
    900.46x = 1,242.11 × 606.13
  4. Step 4: Simplify right side
    900.46x = 752,870.89
  5. Step 5: Solve for x
    x = 752,870.89/900.46
  6. Step 6: Final answer
    x = 836.10

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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.