Home / 1,214.03-1,821.51-434.00

Finding the Fourth Proportional to 1,214.03, 1,821.51 and 434.00

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Solution

The fourth proportional to 1,214.03, 1,821.51 and 434.00 is: 651.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.03 : 1,821.51 = 434.00 : x
  2. Step 2: Convert to fraction form
    1,214.03/1,821.51 = 434.00/x
  3. Step 3: Cross multiply
    1,214.03x = 1,821.51 × 434.00
  4. Step 4: Simplify right side
    1,214.03x = 790,526.23
  5. Step 5: Solve for x
    x = 790,526.23/1,214.03
  6. Step 6: Final answer
    x = 651.16

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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.