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Finding the Fourth Proportional to 570.65, 787.73 and 384.24

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Solution

The fourth proportional to 570.65, 787.73 and 384.24 is: 530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.65 : 787.73 = 384.24 : x
  2. Step 2: Convert to fraction form
    570.65/787.73 = 384.24/x
  3. Step 3: Cross multiply
    570.65x = 787.73 × 384.24
  4. Step 4: Simplify right side
    570.65x = 302,675.45
  5. Step 5: Solve for x
    x = 302,675.45/570.65
  6. Step 6: Final answer
    x = 530.40

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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.