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Finding the Fourth Proportional to 1,705.07, 2,557.47 and 535.03

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Solution

The fourth proportional to 1,705.07, 2,557.47 and 535.03 is: 802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.07 : 2,557.47 = 535.03 : x
  2. Step 2: Convert to fraction form
    1,705.07/2,557.47 = 535.03/x
  3. Step 3: Cross multiply
    1,705.07x = 2,557.47 × 535.03
  4. Step 4: Simplify right side
    1,705.07x = 1,368,323.17
  5. Step 5: Solve for x
    x = 1,368,323.17/1,705.07
  6. Step 6: Final answer
    x = 802.50

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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.