Home / 1,364.02-2,045.80-389.89

Finding the Fourth Proportional to 1,364.02, 2,045.80 and 389.89

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Solution

The fourth proportional to 1,364.02, 2,045.80 and 389.89 is: 584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.02 : 2,045.80 = 389.89 : x
  2. Step 2: Convert to fraction form
    1,364.02/2,045.80 = 389.89/x
  3. Step 3: Cross multiply
    1,364.02x = 2,045.80 × 389.89
  4. Step 4: Simplify right side
    1,364.02x = 797,636.96
  5. Step 5: Solve for x
    x = 797,636.96/1,364.02
  6. Step 6: Final answer
    x = 584.77

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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.