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Finding the Fourth Proportional to 503.79, 695.27 and 307.25

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Solution

The fourth proportional to 503.79, 695.27 and 307.25 is: 424.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.79 : 695.27 = 307.25 : x
  2. Step 2: Convert to fraction form
    503.79/695.27 = 307.25/x
  3. Step 3: Cross multiply
    503.79x = 695.27 × 307.25
  4. Step 4: Simplify right side
    503.79x = 213,620.17
  5. Step 5: Solve for x
    x = 213,620.17/503.79
  6. Step 6: Final answer
    x = 424.03

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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.