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Finding the Fourth Proportional to 942.49, 1,413.57 and 293.23

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Solution

The fourth proportional to 942.49, 1,413.57 and 293.23 is: 439.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.49 : 1,413.57 = 293.23 : x
  2. Step 2: Convert to fraction form
    942.49/1,413.57 = 293.23/x
  3. Step 3: Cross multiply
    942.49x = 1,413.57 × 293.23
  4. Step 4: Simplify right side
    942.49x = 414,501.13
  5. Step 5: Solve for x
    x = 414,501.13/942.49
  6. Step 6: Final answer
    x = 439.79

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.