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Finding the Fourth Proportional to 927.83, 1,280.30 and 554.76

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Solution

The fourth proportional to 927.83, 1,280.30 and 554.76 is: 765.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.83 : 1,280.30 = 554.76 : x
  2. Step 2: Convert to fraction form
    927.83/1,280.30 = 554.76/x
  3. Step 3: Cross multiply
    927.83x = 1,280.30 × 554.76
  4. Step 4: Simplify right side
    927.83x = 710,259.23
  5. Step 5: Solve for x
    x = 710,259.23/927.83
  6. Step 6: Final answer
    x = 765.51

Related Problems

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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.