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Finding the Fourth Proportional to 561.38, 775.06 and 365.18

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Solution

The fourth proportional to 561.38, 775.06 and 365.18 is: 504.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.38 : 775.06 = 365.18 : x
  2. Step 2: Convert to fraction form
    561.38/775.06 = 365.18/x
  3. Step 3: Cross multiply
    561.38x = 775.06 × 365.18
  4. Step 4: Simplify right side
    561.38x = 283,032.54
  5. Step 5: Solve for x
    x = 283,032.54/561.38
  6. Step 6: Final answer
    x = 504.18

Related Problems

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Half scale
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Double scale
Find fourth proportional to 562.38, 776.44 and 366.18
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.