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Finding the Fourth Proportional to 553.02, 762.75 and 436.74

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Solution

The fourth proportional to 553.02, 762.75 and 436.74 is: 602.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.02 : 762.75 = 436.74 : x
  2. Step 2: Convert to fraction form
    553.02/762.75 = 436.74/x
  3. Step 3: Cross multiply
    553.02x = 762.75 × 436.74
  4. Step 4: Simplify right side
    553.02x = 333,123.44
  5. Step 5: Solve for x
    x = 333,123.44/553.02
  6. Step 6: Final answer
    x = 602.37

Related Problems

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Double scale
Find fourth proportional to 554.02, 764.13 and 437.74
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.