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Finding the Fourth Proportional to 1,282.55, 1,924.63 and 460.80

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Solution

The fourth proportional to 1,282.55, 1,924.63 and 460.80 is: 691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.55 : 1,924.63 = 460.80 : x
  2. Step 2: Convert to fraction form
    1,282.55/1,924.63 = 460.80/x
  3. Step 3: Cross multiply
    1,282.55x = 1,924.63 × 460.80
  4. Step 4: Simplify right side
    1,282.55x = 886,868.35
  5. Step 5: Solve for x
    x = 886,868.35/1,282.55
  6. Step 6: Final answer
    x = 691.49

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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.