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Finding the Fourth Proportional to 1,970.17, 2,955.33 and 509.32

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Solution

The fourth proportional to 1,970.17, 2,955.33 and 509.32 is: 764.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.17 : 2,955.33 = 509.32 : x
  2. Step 2: Convert to fraction form
    1,970.17/2,955.33 = 509.32/x
  3. Step 3: Cross multiply
    1,970.17x = 2,955.33 × 509.32
  4. Step 4: Simplify right side
    1,970.17x = 1,505,216.06
  5. Step 5: Solve for x
    x = 1,505,216.06/1,970.17
  6. Step 6: Final answer
    x = 764.00

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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.