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Finding the Fourth Proportional to 1,017.01, 1,525.52 and 286.57

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Solution

The fourth proportional to 1,017.01, 1,525.52 and 286.57 is: 429.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.01 : 1,525.52 = 286.57 : x
  2. Step 2: Convert to fraction form
    1,017.01/1,525.52 = 286.57/x
  3. Step 3: Cross multiply
    1,017.01x = 1,525.52 × 286.57
  4. Step 4: Simplify right side
    1,017.01x = 437,168.27
  5. Step 5: Solve for x
    x = 437,168.27/1,017.01
  6. Step 6: Final answer
    x = 429.86

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Double scale
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Similar ratio
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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.