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Finding the Fourth Proportional to 760.95, 1,047.38 and 635.19

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Solution

The fourth proportional to 760.95, 1,047.38 and 635.19 is: 874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.95 : 1,047.38 = 635.19 : x
  2. Step 2: Convert to fraction form
    760.95/1,047.38 = 635.19/x
  3. Step 3: Cross multiply
    760.95x = 1,047.38 × 635.19
  4. Step 4: Simplify right side
    760.95x = 665,286.89
  5. Step 5: Solve for x
    x = 665,286.89/760.95
  6. Step 6: Final answer
    x = 874.28

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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.