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Finding the Fourth Proportional to 886.08, 1,330.65 and 558.03

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Solution

The fourth proportional to 886.08, 1,330.65 and 558.03 is: 838.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.08 : 1,330.65 = 558.03 : x
  2. Step 2: Convert to fraction form
    886.08/1,330.65 = 558.03/x
  3. Step 3: Cross multiply
    886.08x = 1,330.65 × 558.03
  4. Step 4: Simplify right side
    886.08x = 742,539.82
  5. Step 5: Solve for x
    x = 742,539.82/886.08
  6. Step 6: Final answer
    x = 838.01

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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.