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Finding the Fourth Proportional to 760.44, 1,141.32 and 580.08

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Solution

The fourth proportional to 760.44, 1,141.32 and 580.08 is: 870.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.44 : 1,141.32 = 580.08 : x
  2. Step 2: Convert to fraction form
    760.44/1,141.32 = 580.08/x
  3. Step 3: Cross multiply
    760.44x = 1,141.32 × 580.08
  4. Step 4: Simplify right side
    760.44x = 662,056.91
  5. Step 5: Solve for x
    x = 662,056.91/760.44
  6. Step 6: Final answer
    x = 870.62

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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.