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Finding the Fourth Proportional to 1,179.37, 1,627.53 and 655.40

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Solution

The fourth proportional to 1,179.37, 1,627.53 and 655.40 is: 904.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.37 : 1,627.53 = 655.40 : x
  2. Step 2: Convert to fraction form
    1,179.37/1,627.53 = 655.40/x
  3. Step 3: Cross multiply
    1,179.37x = 1,627.53 × 655.40
  4. Step 4: Simplify right side
    1,179.37x = 1,066,683.16
  5. Step 5: Solve for x
    x = 1,066,683.16/1,179.37
  6. Step 6: Final answer
    x = 904.46

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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.