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Finding the Fourth Proportional to 1,342.15, 1,852.24 and 752.77

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Solution

The fourth proportional to 1,342.15, 1,852.24 and 752.77 is: 1,038.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.15 : 1,852.24 = 752.77 : x
  2. Step 2: Convert to fraction form
    1,342.15/1,852.24 = 752.77/x
  3. Step 3: Cross multiply
    1,342.15x = 1,852.24 × 752.77
  4. Step 4: Simplify right side
    1,342.15x = 1,394,304.19
  5. Step 5: Solve for x
    x = 1,394,304.19/1,342.15
  6. Step 6: Final answer
    x = 1,038.86

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Half scale
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Double scale
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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.