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Finding the Fourth Proportional to 617.32, 851.68 and 365.19

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Solution

The fourth proportional to 617.32, 851.68 and 365.19 is: 503.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.32 : 851.68 = 365.19 : x
  2. Step 2: Convert to fraction form
    617.32/851.68 = 365.19/x
  3. Step 3: Cross multiply
    617.32x = 851.68 × 365.19
  4. Step 4: Simplify right side
    617.32x = 311,024.11
  5. Step 5: Solve for x
    x = 311,024.11/617.32
  6. Step 6: Final answer
    x = 503.83

Related Problems

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Half scale
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Double scale
Find fourth proportional to 618.32, 853.06 and 366.19
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.