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Finding the Fourth Proportional to 1,460.88, 2,191.08 and 421.02

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Solution

The fourth proportional to 1,460.88, 2,191.08 and 421.02 is: 631.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.88 : 2,191.08 = 421.02 : x
  2. Step 2: Convert to fraction form
    1,460.88/2,191.08 = 421.02/x
  3. Step 3: Cross multiply
    1,460.88x = 2,191.08 × 421.02
  4. Step 4: Simplify right side
    1,460.88x = 922,488.50
  5. Step 5: Solve for x
    x = 922,488.50/1,460.88
  6. Step 6: Final answer
    x = 631.46

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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.