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Finding the Fourth Proportional to 1,004.94, 1,386.78 and 585.32

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Solution

The fourth proportional to 1,004.94, 1,386.78 and 585.32 is: 807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.94 : 1,386.78 = 585.32 : x
  2. Step 2: Convert to fraction form
    1,004.94/1,386.78 = 585.32/x
  3. Step 3: Cross multiply
    1,004.94x = 1,386.78 × 585.32
  4. Step 4: Simplify right side
    1,004.94x = 811,703.14
  5. Step 5: Solve for x
    x = 811,703.14/1,004.94
  6. Step 6: Final answer
    x = 807.71

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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.