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Finding the Fourth Proportional to 614.99, 848.31 and 449.00

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Solution

The fourth proportional to 614.99, 848.31 and 449.00 is: 619.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.99 : 848.31 = 449.00 : x
  2. Step 2: Convert to fraction form
    614.99/848.31 = 449.00/x
  3. Step 3: Cross multiply
    614.99x = 848.31 × 449.00
  4. Step 4: Simplify right side
    614.99x = 380,886.95
  5. Step 5: Solve for x
    x = 380,886.95/614.99
  6. Step 6: Final answer
    x = 619.34

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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.