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Finding the Fourth Proportional to 1,179.29, 1,627.40 and 655.31

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Solution

The fourth proportional to 1,179.29, 1,627.40 and 655.31 is: 904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.29 : 1,627.40 = 655.31 : x
  2. Step 2: Convert to fraction form
    1,179.29/1,627.40 = 655.31/x
  3. Step 3: Cross multiply
    1,179.29x = 1,627.40 × 655.31
  4. Step 4: Simplify right side
    1,179.29x = 1,066,457.20
  5. Step 5: Solve for x
    x = 1,066,457.20/1,179.29
  6. Step 6: Final answer
    x = 904.32

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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.