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Finding the Fourth Proportional to 1,430.55, 2,144.46 and 552.42

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Solution

The fourth proportional to 1,430.55, 2,144.46 and 552.42 is: 828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.55 : 2,144.46 = 552.42 : x
  2. Step 2: Convert to fraction form
    1,430.55/2,144.46 = 552.42/x
  3. Step 3: Cross multiply
    1,430.55x = 2,144.46 × 552.42
  4. Step 4: Simplify right side
    1,430.55x = 1,184,642.59
  5. Step 5: Solve for x
    x = 1,184,642.59/1,430.55
  6. Step 6: Final answer
    x = 828.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.