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Finding the Fourth Proportional to 561.19, 774.44 and 365.03

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Solution

The fourth proportional to 561.19, 774.44 and 365.03 is: 503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.19 : 774.44 = 365.03 : x
  2. Step 2: Convert to fraction form
    561.19/774.44 = 365.03/x
  3. Step 3: Cross multiply
    561.19x = 774.44 × 365.03
  4. Step 4: Simplify right side
    561.19x = 282,695.31
  5. Step 5: Solve for x
    x = 282,695.31/561.19
  6. Step 6: Final answer
    x = 503.74

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Double scale
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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.