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Finding the Fourth Proportional to 946.64, 1,420.16 and 369.52

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Solution

The fourth proportional to 946.64, 1,420.16 and 369.52 is: 554.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.64 : 1,420.16 = 369.52 : x
  2. Step 2: Convert to fraction form
    946.64/1,420.16 = 369.52/x
  3. Step 3: Cross multiply
    946.64x = 1,420.16 × 369.52
  4. Step 4: Simplify right side
    946.64x = 524,777.52
  5. Step 5: Solve for x
    x = 524,777.52/946.64
  6. Step 6: Final answer
    x = 554.36

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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.