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Finding the Fourth Proportional to 615.99, 924.63 and 442.89

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Solution

The fourth proportional to 615.99, 924.63 and 442.89 is: 664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.99 : 924.63 = 442.89 : x
  2. Step 2: Convert to fraction form
    615.99/924.63 = 442.89/x
  3. Step 3: Cross multiply
    615.99x = 924.63 × 442.89
  4. Step 4: Simplify right side
    615.99x = 409,509.38
  5. Step 5: Solve for x
    x = 409,509.38/615.99
  6. Step 6: Final answer
    x = 664.80

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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.