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Finding the Fourth Proportional to 900.02, 1,350.53 and 413.07

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Solution

The fourth proportional to 900.02, 1,350.53 and 413.07 is: 619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.02 : 1,350.53 = 413.07 : x
  2. Step 2: Convert to fraction form
    900.02/1,350.53 = 413.07/x
  3. Step 3: Cross multiply
    900.02x = 1,350.53 × 413.07
  4. Step 4: Simplify right side
    900.02x = 557,861.36
  5. Step 5: Solve for x
    x = 557,861.36/900.02
  6. Step 6: Final answer
    x = 619.84

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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.