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Finding the Fourth Proportional to 503.68, 695.16 and 282.64

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Solution

The fourth proportional to 503.68, 695.16 and 282.64 is: 390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.68 : 695.16 = 282.64 : x
  2. Step 2: Convert to fraction form
    503.68/695.16 = 282.64/x
  3. Step 3: Cross multiply
    503.68x = 695.16 × 282.64
  4. Step 4: Simplify right side
    503.68x = 196,480.02
  5. Step 5: Solve for x
    x = 196,480.02/503.68
  6. Step 6: Final answer
    x = 390.09

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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.