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Finding the Fourth Proportional to 1,054.60, 1,452.54 and 914.20

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Solution

The fourth proportional to 1,054.60, 1,452.54 and 914.20 is: 1,259.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.60 : 1,452.54 = 914.20 : x
  2. Step 2: Convert to fraction form
    1,054.60/1,452.54 = 914.20/x
  3. Step 3: Cross multiply
    1,054.60x = 1,452.54 × 914.20
  4. Step 4: Simplify right side
    1,054.60x = 1,327,912.07
  5. Step 5: Solve for x
    x = 1,327,912.07/1,054.60
  6. Step 6: Final answer
    x = 1,259.16

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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.