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Finding the Fourth Proportional to 1,071.51, 1,479.14 and 652.00

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Solution

The fourth proportional to 1,071.51, 1,479.14 and 652.00 is: 900.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.51 : 1,479.14 = 652.00 : x
  2. Step 2: Convert to fraction form
    1,071.51/1,479.14 = 652.00/x
  3. Step 3: Cross multiply
    1,071.51x = 1,479.14 × 652.00
  4. Step 4: Simplify right side
    1,071.51x = 964,392.32
  5. Step 5: Solve for x
    x = 964,392.32/1,071.51
  6. Step 6: Final answer
    x = 900.03

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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.