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Finding the Fourth Proportional to 623.88, 930.99 and 554.87

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Solution

The fourth proportional to 623.88, 930.99 and 554.87 is: 828.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.88 : 930.99 = 554.87 : x
  2. Step 2: Convert to fraction form
    623.88/930.99 = 554.87/x
  3. Step 3: Cross multiply
    623.88x = 930.99 × 554.87
  4. Step 4: Simplify right side
    623.88x = 516,573.77
  5. Step 5: Solve for x
    x = 516,573.77/623.88
  6. Step 6: Final answer
    x = 828.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.