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Finding the Fourth Proportional to 1,452.19, 2,178.48 and 630.46

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Solution

The fourth proportional to 1,452.19, 2,178.48 and 630.46 is: 945.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.19 : 2,178.48 = 630.46 : x
  2. Step 2: Convert to fraction form
    1,452.19/2,178.48 = 630.46/x
  3. Step 3: Cross multiply
    1,452.19x = 2,178.48 × 630.46
  4. Step 4: Simplify right side
    1,452.19x = 1,373,444.50
  5. Step 5: Solve for x
    x = 1,373,444.50/1,452.19
  6. Step 6: Final answer
    x = 945.77

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1.5x scale

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.