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Finding the Fourth Proportional to 1,570.94, 2,356.05 and 705.50

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Solution

The fourth proportional to 1,570.94, 2,356.05 and 705.50 is: 1,058.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.94 : 2,356.05 = 705.50 : x
  2. Step 2: Convert to fraction form
    1,570.94/2,356.05 = 705.50/x
  3. Step 3: Cross multiply
    1,570.94x = 2,356.05 × 705.50
  4. Step 4: Simplify right side
    1,570.94x = 1,662,193.28
  5. Step 5: Solve for x
    x = 1,662,193.28/1,570.94
  6. Step 6: Final answer
    x = 1,058.09

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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.