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Finding the Fourth Proportional to 553.90, 764.52 and 365.10

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Solution

The fourth proportional to 553.90, 764.52 and 365.10 is: 503.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.90 : 764.52 = 365.10 : x
  2. Step 2: Convert to fraction form
    553.90/764.52 = 365.10/x
  3. Step 3: Cross multiply
    553.90x = 764.52 × 365.10
  4. Step 4: Simplify right side
    553.90x = 279,127.06
  5. Step 5: Solve for x
    x = 279,127.06/553.90
  6. Step 6: Final answer
    x = 503.93

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Double scale
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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.