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Finding the Fourth Proportional to 988.00, 1,484.08 and 623.05

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Solution

The fourth proportional to 988.00, 1,484.08 and 623.05 is: 935.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.00 : 1,484.08 = 623.05 : x
  2. Step 2: Convert to fraction form
    988.00/1,484.08 = 623.05/x
  3. Step 3: Cross multiply
    988.00x = 1,484.08 × 623.05
  4. Step 4: Simplify right side
    988.00x = 924,650.78
  5. Step 5: Solve for x
    x = 924,650.78/988.00
  6. Step 6: Final answer
    x = 935.88

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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.