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Finding the Fourth Proportional to 503.19, 694.40 and 282.16

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Solution

The fourth proportional to 503.19, 694.40 and 282.16 is: 389.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.19 : 694.40 = 282.16 : x
  2. Step 2: Convert to fraction form
    503.19/694.40 = 282.16/x
  3. Step 3: Cross multiply
    503.19x = 694.40 × 282.16
  4. Step 4: Simplify right side
    503.19x = 195,931.90
  5. Step 5: Solve for x
    x = 195,931.90/503.19
  6. Step 6: Final answer
    x = 389.38

Related Problems

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Double scale
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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.