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Finding the Fourth Proportional to 2,275.78, 3,413.70 and 632.30

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Solution

The fourth proportional to 2,275.78, 3,413.70 and 632.30 is: 948.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.78 : 3,413.70 = 632.30 : x
  2. Step 2: Convert to fraction form
    2,275.78/3,413.70 = 632.30/x
  3. Step 3: Cross multiply
    2,275.78x = 3,413.70 × 632.30
  4. Step 4: Simplify right side
    2,275.78x = 2,158,482.51
  5. Step 5: Solve for x
    x = 2,158,482.51/2,275.78
  6. Step 6: Final answer
    x = 948.46

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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.