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Finding the Fourth Proportional to 736.08, 1,015.70 and 470.60

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Solution

The fourth proportional to 736.08, 1,015.70 and 470.60 is: 649.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.08 : 1,015.70 = 470.60 : x
  2. Step 2: Convert to fraction form
    736.08/1,015.70 = 470.60/x
  3. Step 3: Cross multiply
    736.08x = 1,015.70 × 470.60
  4. Step 4: Simplify right side
    736.08x = 477,980.99
  5. Step 5: Solve for x
    x = 477,980.99/736.08
  6. Step 6: Final answer
    x = 649.36

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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.