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Finding the Fourth Proportional to 715.10, 987.01 and 466.00

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Solution

The fourth proportional to 715.10, 987.01 and 466.00 is: 643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.10 : 987.01 = 466.00 : x
  2. Step 2: Convert to fraction form
    715.10/987.01 = 466.00/x
  3. Step 3: Cross multiply
    715.10x = 987.01 × 466.00
  4. Step 4: Simplify right side
    715.10x = 459,943.03
  5. Step 5: Solve for x
    x = 459,943.03/715.10
  6. Step 6: Final answer
    x = 643.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.