Home / 1,284.88-1,928.40-555.01

Finding the Fourth Proportional to 1,284.88, 1,928.40 and 555.01

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Solution

The fourth proportional to 1,284.88, 1,928.40 and 555.01 is: 832.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.88 : 1,928.40 = 555.01 : x
  2. Step 2: Convert to fraction form
    1,284.88/1,928.40 = 555.01/x
  3. Step 3: Cross multiply
    1,284.88x = 1,928.40 × 555.01
  4. Step 4: Simplify right side
    1,284.88x = 1,070,281.28
  5. Step 5: Solve for x
    x = 1,070,281.28/1,284.88
  6. Step 6: Final answer
    x = 832.98

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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.