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Finding the Fourth Proportional to 1,024.64, 1,413.60 and 651.52

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Solution

The fourth proportional to 1,024.64, 1,413.60 and 651.52 is: 898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024.64 : 1,413.60 = 651.52 : x
  2. Step 2: Convert to fraction form
    1,024.64/1,413.60 = 651.52/x
  3. Step 3: Cross multiply
    1,024.64x = 1,413.60 × 651.52
  4. Step 4: Simplify right side
    1,024.64x = 920,988.67
  5. Step 5: Solve for x
    x = 920,988.67/1,024.64
  6. Step 6: Final answer
    x = 898.84

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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.