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Finding the Fourth Proportional to 503.39, 694.85 and 317.19

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Solution

The fourth proportional to 503.39, 694.85 and 317.19 is: 437.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.39 : 694.85 = 317.19 : x
  2. Step 2: Convert to fraction form
    503.39/694.85 = 317.19/x
  3. Step 3: Cross multiply
    503.39x = 694.85 × 317.19
  4. Step 4: Simplify right side
    503.39x = 220,396.15
  5. Step 5: Solve for x
    x = 220,396.15/503.39
  6. Step 6: Final answer
    x = 437.83

Related Problems

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Half scale
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Double scale
Find fourth proportional to 504.39, 696.23 and 318.19
Similar ratio
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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.