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Finding the Fourth Proportional to 744.70, 1,027.75 and 413.19

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Solution

The fourth proportional to 744.70, 1,027.75 and 413.19 is: 570.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.70 : 1,027.75 = 413.19 : x
  2. Step 2: Convert to fraction form
    744.70/1,027.75 = 413.19/x
  3. Step 3: Cross multiply
    744.70x = 1,027.75 × 413.19
  4. Step 4: Simplify right side
    744.70x = 424,656.02
  5. Step 5: Solve for x
    x = 424,656.02/744.70
  6. Step 6: Final answer
    x = 570.24

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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.