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Finding the Fourth Proportional to 604.80, 912.60 and 561.60

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Solution

The fourth proportional to 604.80, 912.60 and 561.60 is: 847.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.80 : 912.60 = 561.60 : x
  2. Step 2: Convert to fraction form
    604.80/912.60 = 561.60/x
  3. Step 3: Cross multiply
    604.80x = 912.60 × 561.60
  4. Step 4: Simplify right side
    604.80x = 512,516.16
  5. Step 5: Solve for x
    x = 512,516.16/604.80
  6. Step 6: Final answer
    x = 847.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.