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Finding the Fourth Proportional to 1,024.38, 1,413.86 and 626.11

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Solution

The fourth proportional to 1,024.38, 1,413.86 and 626.11 is: 864.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024.38 : 1,413.86 = 626.11 : x
  2. Step 2: Convert to fraction form
    1,024.38/1,413.86 = 626.11/x
  3. Step 3: Cross multiply
    1,024.38x = 1,413.86 × 626.11
  4. Step 4: Simplify right side
    1,024.38x = 885,225.22
  5. Step 5: Solve for x
    x = 885,225.22/1,024.38
  6. Step 6: Final answer
    x = 864.16

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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.