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Finding the Fourth Proportional to 1,180.76, 1,627.20 and 848.60

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Solution

The fourth proportional to 1,180.76, 1,627.20 and 848.60 is: 1,169.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.76 : 1,627.20 = 848.60 : x
  2. Step 2: Convert to fraction form
    1,180.76/1,627.20 = 848.60/x
  3. Step 3: Cross multiply
    1,180.76x = 1,627.20 × 848.60
  4. Step 4: Simplify right side
    1,180.76x = 1,380,841.92
  5. Step 5: Solve for x
    x = 1,380,841.92/1,180.76
  6. Step 6: Final answer
    x = 1,169.45

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Find fourth proportional to 590.38, 813.60 and 424.30
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.