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Finding the Fourth Proportional to 1,410.88, 2,116.04 and 436.76

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Solution

The fourth proportional to 1,410.88, 2,116.04 and 436.76 is: 655.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.88 : 2,116.04 = 436.76 : x
  2. Step 2: Convert to fraction form
    1,410.88/2,116.04 = 436.76/x
  3. Step 3: Cross multiply
    1,410.88x = 2,116.04 × 436.76
  4. Step 4: Simplify right side
    1,410.88x = 924,201.63
  5. Step 5: Solve for x
    x = 924,201.63/1,410.88
  6. Step 6: Final answer
    x = 655.05

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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.