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Finding the Fourth Proportional to 886.75, 1,223.31 and 607.30

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Solution

The fourth proportional to 886.75, 1,223.31 and 607.30 is: 837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.75 : 1,223.31 = 607.30 : x
  2. Step 2: Convert to fraction form
    886.75/1,223.31 = 607.30/x
  3. Step 3: Cross multiply
    886.75x = 1,223.31 × 607.30
  4. Step 4: Simplify right side
    886.75x = 742,916.16
  5. Step 5: Solve for x
    x = 742,916.16/886.75
  6. Step 6: Final answer
    x = 837.80

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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.