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Finding the Fourth Proportional to 886.64, 1,222.74 and 607.28

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Solution

The fourth proportional to 886.64, 1,222.74 and 607.28 is: 837.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.64 : 1,222.74 = 607.28 : x
  2. Step 2: Convert to fraction form
    886.64/1,222.74 = 607.28/x
  3. Step 3: Cross multiply
    886.64x = 1,222.74 × 607.28
  4. Step 4: Simplify right side
    886.64x = 742,539.43
  5. Step 5: Solve for x
    x = 742,539.43/886.64
  6. Step 6: Final answer
    x = 837.48

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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.