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Finding the Fourth Proportional to 503.80, 695.10 and 453.40

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Solution

The fourth proportional to 503.80, 695.10 and 453.40 is: 625.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.80 : 695.10 = 453.40 : x
  2. Step 2: Convert to fraction form
    503.80/695.10 = 453.40/x
  3. Step 3: Cross multiply
    503.80x = 695.10 × 453.40
  4. Step 4: Simplify right side
    503.80x = 315,158.34
  5. Step 5: Solve for x
    x = 315,158.34/503.80
  6. Step 6: Final answer
    x = 625.56

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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.