Home / 1,364.02-2,045.98-390.12

Finding the Fourth Proportional to 1,364.02, 2,045.98 and 390.12

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Solution

The fourth proportional to 1,364.02, 2,045.98 and 390.12 is: 585.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.02 : 2,045.98 = 390.12 : x
  2. Step 2: Convert to fraction form
    1,364.02/2,045.98 = 390.12/x
  3. Step 3: Cross multiply
    1,364.02x = 2,045.98 × 390.12
  4. Step 4: Simplify right side
    1,364.02x = 798,177.72
  5. Step 5: Solve for x
    x = 798,177.72/1,364.02
  6. Step 6: Final answer
    x = 585.17

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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.