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Finding the Fourth Proportional to 946.16, 1,419.24 and 561.52

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Solution

The fourth proportional to 946.16, 1,419.24 and 561.52 is: 842.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.16 : 1,419.24 = 561.52 : x
  2. Step 2: Convert to fraction form
    946.16/1,419.24 = 561.52/x
  3. Step 3: Cross multiply
    946.16x = 1,419.24 × 561.52
  4. Step 4: Simplify right side
    946.16x = 796,931.64
  5. Step 5: Solve for x
    x = 796,931.64/946.16
  6. Step 6: Final answer
    x = 842.28

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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.