Home / 1,005.08-1,386.87-585.53

Finding the Fourth Proportional to 1,005.08, 1,386.87 and 585.53

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Solution

The fourth proportional to 1,005.08, 1,386.87 and 585.53 is: 807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005.08 : 1,386.87 = 585.53 : x
  2. Step 2: Convert to fraction form
    1,005.08/1,386.87 = 585.53/x
  3. Step 3: Cross multiply
    1,005.08x = 1,386.87 × 585.53
  4. Step 4: Simplify right side
    1,005.08x = 812,047.06
  5. Step 5: Solve for x
    x = 812,047.06/1,005.08
  6. Step 6: Final answer
    x = 807.95

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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.