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Finding the Fourth Proportional to 1,570.21, 2,354.59 and 474.37

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Solution

The fourth proportional to 1,570.21, 2,354.59 and 474.37 is: 711.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.21 : 2,354.59 = 474.37 : x
  2. Step 2: Convert to fraction form
    1,570.21/2,354.59 = 474.37/x
  3. Step 3: Cross multiply
    1,570.21x = 2,354.59 × 474.37
  4. Step 4: Simplify right side
    1,570.21x = 1,116,946.86
  5. Step 5: Solve for x
    x = 1,116,946.86/1,570.21
  6. Step 6: Final answer
    x = 711.34

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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.