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Finding the Fourth Proportional to 503.10, 694.39 and 316.75

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Solution

The fourth proportional to 503.10, 694.39 and 316.75 is: 437.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.10 : 694.39 = 316.75 : x
  2. Step 2: Convert to fraction form
    503.10/694.39 = 316.75/x
  3. Step 3: Cross multiply
    503.10x = 694.39 × 316.75
  4. Step 4: Simplify right side
    503.10x = 219,948.03
  5. Step 5: Solve for x
    x = 219,948.03/503.10
  6. Step 6: Final answer
    x = 437.19

Related Problems

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1.5x scale

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.